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123730625 = 54197969
BaseRepresentation
bin1110101111111…
…11101011000001
322121211011111202
413113333223001
5223133340000
620135550545
73031456454
oct727775301
9277734452
10123730625
116392a717
123552b455
131c831cb5
141260b49b
15ace0dd5
hex75ffac1

123730625 has 10 divisors (see below), whose sum is σ = 154614570. Its totient is φ = 98984000.

The previous prime is 123730619. The next prime is 123730657. The reversal of 123730625 is 526037321.

It can be written as a sum of positive squares in 5 ways, for example, as 85895824 + 37834801 = 9268^2 + 6151^2 .

It is not a de Polignac number, because 123730625 - 210 = 123729601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 98360 + ... + 99609.

It is an arithmetic number, because the mean of its divisors is an integer number (15461457).

Almost surely, 2123730625 is an apocalyptic number.

It is an amenable number.

123730625 is a deficient number, since it is larger than the sum of its proper divisors (30883945).

123730625 is an frugal number, since it uses more digits than its factorization.

123730625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197989 (or 197974 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 123730625 is about 11123.4268550658. The cubic root of 123730625 is about 498.3017383453.

Adding to 123730625 its reverse (526037321), we get a palindrome (649767946).

The spelling of 123730625 in words is "one hundred twenty-three million, seven hundred thirty thousand, six hundred twenty-five".

Divisors: 1 5 25 125 625 197969 989845 4949225 24746125 123730625